﻿/**
 * @license Copyright (c) 2003-2014, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or http://ckeditor.com/license
 */

/**
 * @fileOverview Preview plugin.
 */

(function () {
    var pluginPath;

    var previewCmd = {
        modes: {wysiwyg: 1, source: 1},
        canUndo: false,
        readOnly: 1,
        exec: function (editor) {
            var sHTML,
                config = editor.config,
                baseTag = config.baseHref ? '<base href="' + config.baseHref + '"/>' : '',
                eventData;

            if (config.fullPage)
                sHTML = editor.getData().replace(/<head>/, '$&' + baseTag).replace(/[^>]*(?=<\/title>)/, '$& &mdash; ' + editor.lang.preview.preview);
            else {
                var bodyHtml = '<body ',
                    body = editor.document && editor.document.getBody();

                if (body) {
                    if (body.getAttribute('id'))
                        bodyHtml += 'id="' + body.getAttribute('id') + '" ';
                    if (body.getAttribute('class'))
                        bodyHtml += 'class="' + body.getAttribute('class') + '" ';
                }

                bodyHtml += '>';

                sHTML = editor.config.docType + '<html dir="' + editor.config.contentsLangDirection + '">' +
                    '<head>' +
                    baseTag +
                    '<title>' + editor.lang.preview.preview + '</title>' +
                    CKEDITOR.tools.buildStyleHtml(editor.config.contentsCss) +
                    '</head>' + bodyHtml +
                    editor.getData() +
                    '</body></html>';
            }

            var iWidth = 640,
                // 800 * 0.8,
                iHeight = 420,
                // 600 * 0.7,
                iLeft = 80; // (800 - 0.8 * 800) /2 = 800 * 0.1.
            try {
                var screen = window.screen;
                iWidth = Math.round(screen.width * 0.8);
                iHeight = Math.round(screen.height * 0.7);
                iLeft = Math.round(screen.width * 0.1);
            } catch (e) {
            }

            // (#9907) Allow data manipulation before preview is displayed.
            // Also don't open the preview window when event cancelled.
            if (editor.fire('contentPreview', eventData = {dataValue: sHTML}) === false)
                return false;

            var sOpenUrl = '',
                ieLocation;

            if (CKEDITOR.env.ie) {
                window._cke_htmlToLoad = eventData.dataValue;
                ieLocation = 'javascript:void( (function(){' +
                    'document.open();' +
                    // Support for custom document.domain.
                    // Strip comments and replace parent with window.opener in the function body.
                    ('(' + CKEDITOR.tools.fixDomain + ')();').replace(/\/\/.*?\n/g, '').replace(/parent\./g, 'window.opener.') +
                    'document.write( window.opener._cke_htmlToLoad );' +
                    'document.close();' +
                    'window.opener._cke_htmlToLoad = null;' +
                    '})() )';
                // For IE we should use window.location rather than setting url in window.open. (#11146)
                sOpenUrl = '';
            }

            // With Firefox only, we need to open a special preview page, so
            // anchors will work properly on it. (#9047)
            if (CKEDITOR.env.gecko) {
                window._cke_htmlToLoad = eventData.dataValue;
                sOpenUrl = pluginPath + 'preview.html';
            }

            var oWindow = window.open(sOpenUrl, null, 'toolbar=yes,location=no,status=yes,menubar=yes,scrollbars=yes,resizable=yes,width=' +
                iWidth + ',height=' + iHeight + ',left=' + iLeft);

            // For IE we want to assign whole js stored in ieLocation, but in case of
            // popup blocker activation oWindow variable will be null. (#11597)
            if (CKEDITOR.env.ie && oWindow)
                oWindow.location = ieLocation;

            if (!CKEDITOR.env.ie && !CKEDITOR.env.gecko) {
                var doc = oWindow.document;
                doc.open();
                doc.write(eventData.dataValue);
                doc.close();
            }

            return true;
        }
    };

    var pluginName = 'preview';

    // Register a plugin named "preview".
    CKEDITOR.plugins.add(pluginName, {
        lang: 'af,ar,bg,bn,bs,ca,cs,cy,da,de,el,en,en-au,en-ca,en-gb,eo,es,et,eu,fa,fi,fo,fr,fr-ca,gl,gu,he,hi,hr,hu,id,is,it,ja,ka,km,ko,ku,lt,lv,mk,mn,ms,nb,nl,no,pl,pt,pt-br,ro,ru,si,sk,sl,sq,sr,sr-latn,sv,th,tr,tt,ug,uk,vi,zh,zh-cn', // %REMOVE_LINE_CORE%
        icons: 'preview,preview-rtl', // %REMOVE_LINE_CORE%
        hidpi: true, // %REMOVE_LINE_CORE%
        init: function (editor) {

            // Preview is not used for the inline creator.
            if (editor.elementMode == CKEDITOR.ELEMENT_MODE_INLINE)
                return;

            pluginPath = this.path;

            editor.addCommand(pluginName, previewCmd);
            editor.ui.addButton && editor.ui.addButton('Preview', {
                label: editor.lang.preview.preview,
                command: pluginName,
                toolbar: 'document,40'
            });
        }
    });
})();

/**
 * Event fired when executing `preview` command, which allows additional data manipulation.
 * With this event, the raw HTML content of the preview window to be displayed can be altered
 * or modified.
 *
 * @event contentPreview
 * @member CKEDITOR
 * @param {CKEDITOR.editor} editor This editor instance.
 * @param data
 * @param {String} data.dataValue The data that will go to the preview.
 */
